Making a Two Part Mold

As a fledgling casting artist, I have become quite adept at capturing the form of simple objects in negative molds. All I have to do is secure the model in a box before pouring or applying the mold making material of my choice. I am adroitly able to capture the intricate undercuts and angles with clay, alginate and even resins.

Now I am just itching to move on and try my hand at making molds of more complicated objects. I picked a shapely figurine for this task and was well aware that the level of detailing all around the model required me to make two part molds.

In simple words, this means that I cannot make the mold in one go. What I need is two molds with each part capturing one half of the model before merging them into a single composite mold.

I chose plaster for this job and started by making a parting line all around the figurine. I followed an ArtMolds video that showed me how to portion off below the parting line with clay and make keys on the clay perimeter. Making a mold of the remaining half was quite easy.

Once cured, I carefully removed the clay border before making a similar mold of the other side. The video guided me on exactly how to join the two parts of the mold together and strap it securely for the subsequent casting.

The mold turned out a little shaky but I was still elated with my first attempt at two part molds!


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